What are the specs on the G5X3 cam?

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Jan 28, 2004 | 11:38 PM

#21

maddboost

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From: Elmhurst, IL

Ive got a X3 sitting here in my room I might have someone spec it out for me. And may be inclinded to release the info. Note to LG send me a pair of your Stage 2 LS6 heads for free and ill keep it a secret.

Jan 28, 2004 | 11:49 PM

#22

Cal

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From: Northern Utah

I don't see what the big deal is about releasing the lift and duration; that still doesn't reveal what the lobe is shaped like.

Jan 29, 2004 | 01:29 AM

#23

Unaffliated Racing

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well thats the thing about propritery lobes...you can tell the whole world what the specs are...but being a propritery lobe..nobody can get an "exact" lobe just like it..I could profile it...but im sure LG wouldnt like that very much

Jan 29, 2004 | 08:52 AM

#24

1fastWS6

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From: Missouri

Quote:

Originally Posted by SPANKY LS1

.220 includes .080 P to V clearance.

That is using the "piston drop" method. You measure, on a flat surface, how far an intake valve drops before it hits the surface. (Say .160) Then you add gasket thickness (say .060 for stock MLS gasket), add the two together and you have .210 clearance. If, for example your "drop" number was .100 and your gasket was .043, you'd need a .067 flycut to get the same amount of clearance. I'm pretty sure you need .200 on a 114, .220 on a 112, but I'm not positive... [Clearances given are for G5X3 as this is what I've been calulating for ...]

Shawn

Is the "piston drop" method a -legitimate- method for determining P-V clearance?? It doesn't take into account valve timing. If it were that easy, you could do it with the heads on the motor. Just rotate the piston to TDC and push the valves in until they hit, while measuring with a dial gauge. But that still doesn't tell you anything though. Unless you know *exactly* how much clearance you need, using that particular method, for each particular cam profile. Right??

Not trying to diss, just looking for more explanation.

Thanks,
Craig

Jan 29, 2004 | 09:03 AM

#25

ONEBADWS6

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From: Chicago

Lou will give you the LSA to degree the cam, he gave it to me and other customers. Also there is no G5x5 Spanky only a X4. As I look at it how fast do you want to go? Lou is making the power with his cams, do you really need to know the duration or could you be satisfied with an awsome running car? My 2 cents.

Jan 29, 2004 | 10:03 AM

#26

Unaffliated Racing

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his method would work no matter what the valve timing events would be..because his method is always saying the piston is at TDC..but on piston to valve clearence you need to have .100" clearence

Jan 29, 2004 | 01:13 PM

#27

TEA Brent

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From: Bowling Green, KY

That's hilarious!

Quote:

Originally Posted by verbs

I put one on a cam doctor a few weeks ago, but I'm not at liberty to say. Aw, screw it, the #'s aren't patented or anything. Here ya go:

274/282 .694/.683 98 LSA, 22 degrees of advance ground in. But it fits if you remove the entire piston assembly out of the car.

Jan 29, 2004 | 03:24 PM

#28

SPANKY LS1

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From: Seneca, SC

Quote:

Originally Posted by 1fastWS6

Thats the point, Lou knows that .XXX is required, all you have to do is measure and cut if necessary. I'm sure there is a formula that you could plug other cam specs into to determine how much "valve drop" was necessary, but I don't know what it is. All you'd have to know is how far the valves are open at TDC....

Quote:

Originally Posted by ONEBADWS6

Also there is no G5x5 Spanky only a X4.

Acording to Lou, there is/was a G5X5, if not in tangible camshaft form, it exists in the world that is Lou's mind...

(Actually, the G5X4 started out as the G5X3.1, there was also a G5X3.2. I would assume that the G5X3.2 is the G5X5, but don't know for sure.) Lou is always thinking and testing new cam designs, I know for a fact that there was 3 or 4 "G5X3" cams tested before the "real" G5X3 came out. I bet they'll be an X4, X5 and beyond coming out, especailly as more "non-piston to valve limited" motors are being built.

Shawn